Comtech EF Data PCB-4300 - Manual (Page 82)

PCB-4300 1:2 Phase Combiner Revision 2
Appendix B MN/PCB4300.IOM
B–4
B.5.2.1 Virtual Address
Virtual Address is a method that allows the user to access the SSPA via the PCCB using any communications software. Virtual
Address is aupported in both EIA-232 and EIA-485 applications.
The following example depicts use of the virtual addressing scheme:
<123V1/MUT? where:
Base address = 123;
‘V’ = virtual address delimiter;
1 = virtual address of SSPA automatically set by the phase combiner box.
Notes:
1. Only three virtual commands can be used to program the individual SSPAs when in Phase Combined mode
(RED=1):
• CAA=
• DAT=
• TIM=
2. All virtual queries can be directed to the individual SSPAs in any mode.
3. The following virtual commands can NEVER be used to program the individual SSPAs:
• MUT=
• ATT=
B.5.3 Address Delimiter
This is the “forward slash” character '/' (ASCII code 47).
B.5.4 Instruction Code
This is a three-character alphabetic sequence that identifies the subject of the message. Wherever possible, the instruction codes have been
chosen to have some significance. This aids in the readability of the message if seen in its raw ASCII form. Upper and lower case
alphabetic characters (i.e., A-Z [ASCII codes 65-90], and a-z [ASCII codes 97-122]) may be used.